How long does it take 9260-8i to add a drive to an array?

[computerpro3]

Last night I started the process of adding a 2TB drive to my RAID 6 array that already had 4 2TB drives in it.

It's been going for about 16 hours now, which has be a bit concerned. Especially because I have no way to monitor progress since I'm doing it from the Windows gui.

I thought I'd seen people saying it should take seven or eight hours. The only way I still know it's working is because I hear the drives working.

Any ideas if this is normal or not?